Can i use tmpfs to mount /tmp ?
cat /etc/fstab # DeviceMountpoint FStype Options DumpPass# /dev/ad4s3b noneswapsw 0 0 /dev/ad4s3a / ufs rw,noatime 1 1 /dev/ad4s3e /tmpufs rw 2 2 /dev/ad4s3f /usrufs rw 2 2 /dev/ad4s3d /varufs rw 2 2 /dev/acd0 /cdrom cd9660 ro,noauto 0 0 /dev/ad4s7 /media/Fmsdosfs rw 0 0 /dev/ad4s8 /media/Gext2fs rw 0 0 The /dev/ad4s3e is used for /tmp. Now i want to use tmpfs instead of ufs as below none /tmp tmpfs size=64M,nodev,nosuid,noexec 0 0 If i can, then how to reuse the space of /dev/ad4s3e ? Sincerely! - e^(π⋅i) + 1 = 0 -- View this message in context: http://old.nabble.com/Can-i-use-tmpfs-to-mount--tmp---tp29625711p29625711.html Sent from the freebsd-questions mailing list archive at Nabble.com. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Can i use tmpfs to mount /tmp ?
On 05/09/2010 07:09:50, zaxis wrote: The /dev/ad4s3e is used for /tmp. Now i want to use tmpfs instead of ufs as below none /tmp tmpfs size=64M,nodev,nosuid,noexec 0 0 If i can, then how to reuse the space of /dev/ad4s3e ? There are two choices. Either mount your ad4s3e partition somewhere else as a regular filesystem -- you can move the mount point simply by unmounting it, editing fstab and then mounting the new partition. Do that before mounting your new tmpfs based /tmp, or you'll block access to the whole filesystem on ad4s3e. Oh, and 'chmod 755 /new/mountpoint' after you move it -- you don't want the /tmp defaults of mode 1777 on a normal filesystem. Or amalgamate the ad4s3e partition with one of the partitions neighbouring it on the drive. Use bsdlabel(8) to examine and modify the disk-level layout. If you join ad4s3e on to the end of the preceeding partition, you can use growfs(8) to expand that partition into the extra space. Otherwise you'll have to newfs(8) the expanded partition and recover the contents from backup. Either way, this sort of partition wrangling operation involves low-level fiddling in the guts of the OS and an enhanced potential for things to go horribly wrong, so make sure you've got good backups and spend some time planning exactly what you are going to do, even down to the extent of writing out all the commands you'll need beforehand. Cheers, Matthew PS. 64MB is pretty small for a /tmp -- you might want to increase the size of your tmpfs. -- Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard Flat 3 PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate JID: matt...@infracaninophile.co.uk Kent, CT11 9PW signature.asc Description: OpenPGP digital signature
Re: Can i use tmpfs to mount /tmp ?
Allow me a short comment regarding your /etc/fstab, not related to your intial question. You have the following entries: On Sat, 4 Sep 2010 23:09:50 -0700 (PDT), zaxis z_a...@163.com wrote: /dev/ad4s7/media/Fmsdosfs rw 0 0 /dev/ad4s8/media/Gext2fs rw 0 0 It looks like you are using the directories F and G in /media to mount other slices of your hard disk (primary partitions) corresponding to specific drive letters. According to man hier, the /media subtree is not intended for that purpose. Let me quote: /media/contains subdirectories to be used as mount points for remov- able media such as CDs, USB drives, and floppy disks This directory is often used by automounting solutions such as they appear in KDE, Gnome or Xfce. Now, where else would one instead mount them? In /mnt maybe? /mnt/ empty directory commonly used by system administrators as a temporary mount point No, doesn't seem to look right. As I didn't have any need to mount FAT/NTFS partitions in my whole life, I couldn't even suggest some directory where to mount it that does not interfere with the well-designed and intended concepts of the FreeBSD file system hierarchy. I had other kinds of partitions and disks (UFS usually) mounted under /export, but just because they were then exported via NFS right away, so the use of /export/F and /export/G would look strange, too (but possible, as FreeBSD does not have /export per se - it's a Solarism, if I remember correctly). The same way, you could create any arbitrary name (/winparts, /dos, /ntmounts or anything else) to not interfere with the expected use of /media. Maybe some file system guru cares to join my little sideshow and explain how it is done correctly? :-) -- Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ... ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Can i use tmpfs to mount /tmp ?
thanks for your suggestion! df -h Filesystem SizeUsed Avail Capacity Mounted on /dev/ad4s3a496M119M337M26%/ devfs 1.0K1.0K 0B 100%/dev /dev/ad4s3e496M 18M438M 4%/tmp /dev/ad4s3f 14G4.8G8.4G37%/usr /dev/ad4s3d1.4G178M1.1G14%/var /dev/ad4s7 30G3.6G 26G12%/media/F /dev/ad4s8 30G4.1G 24G15%/media/G The /dev/ad4s3e is just 496M. so it is not worth for me to modify the disk-level layout. Matthew Seaman-2 wrote: On 05/09/2010 07:09:50, zaxis wrote: The /dev/ad4s3e is used for /tmp. Now i want to use tmpfs instead of ufs as below none /tmp tmpfs size=64M,nodev,nosuid,noexec 0 0 If i can, then how to reuse the space of /dev/ad4s3e ? There are two choices. Either mount your ad4s3e partition somewhere else as a regular filesystem -- you can move the mount point simply by unmounting it, editing fstab and then mounting the new partition. Do that before mounting your new tmpfs based /tmp, or you'll block access to the whole filesystem on ad4s3e. Oh, and 'chmod 755 /new/mountpoint' after you move it -- you don't want the /tmp defaults of mode 1777 on a normal filesystem. Or amalgamate the ad4s3e partition with one of the partitions neighbouring it on the drive. Use bsdlabel(8) to examine and modify the disk-level layout. If you join ad4s3e on to the end of the preceeding partition, you can use growfs(8) to expand that partition into the extra space. Otherwise you'll have to newfs(8) the expanded partition and recover the contents from backup. Either way, this sort of partition wrangling operation involves low-level fiddling in the guts of the OS and an enhanced potential for things to go horribly wrong, so make sure you've got good backups and spend some time planning exactly what you are going to do, even down to the extent of writing out all the commands you'll need beforehand. Cheers, Matthew PS. 64MB is pretty small for a /tmp -- you might want to increase the size of your tmpfs. -- Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard Flat 3 PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate JID: matt...@infracaninophile.co.uk Kent, CT11 9PW - e^(π⋅i) + 1 = 0 -- View this message in context: http://old.nabble.com/Can-i-use-tmpfs-to-mount--tmp---tp29625711p29627883.html Sent from the freebsd-questions mailing list archive at Nabble.com. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
